Wendell



(No Model.)

W. wNnLL.

SEWING MACHINE.

No. r186,662. Patented Oct. 16, 1883.

N. PETERS4 PhmLumgmpnnr. washington, Dlc.

Y' UNITED STATES PATENT FFIC.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 286,662, dated Octobe.i16, 18S?.

i Application filed July 16,1883. (No model.)

-of which the following is aspecication, reference being had therein tothe accompanying drawings.

The object of iny invention is to provide the presser-bar of asewing-machine with simple and efficient means by which said presser-barand its attached foot may be raised when required; als'o means wherebythe presser bar and foot may be raised to differents heights by movingthehandle of the lifting-lever in different directions, and to provide alifting-lever of such construction that, although it is pivotedon thepresser-bar, the latter may have a limited vert-ical movement withoutaffecting the former.

In the accompanying drawings, Figure l is an inside view ofthe cap orface plate of a sewing-machine having my invention applied thereto, thepresser-bar and presser-foot being represented in their lowest position.Fig. 2 is a view similar to Fig. l, representing the presser-bar andpresser-foot in their highest bar.

position in full lilies and in a lower raised position in dotted lines,the positions of the lifting-lever being indicated by full and dottedlines to correspond `to the different elevated positions of thepresser-bar and presser-foot.

A indicates the cap or face plate ofa sewing-machine; B, the needle-bar,carrying the usual eye-pointed needle, b, and C the presser- Apresser-foot, I), of any suitable construction, is secured to the lowerend of the presser-bar by a set-screw, G, or in any other proper manner,the presser-foot being yield ingly held upon the work by a spiralspring, E, the stress of whichis regulated by a thumbnut, F, all asusual.

My'improved lifting-lever H is connected with the presser-bar by a pin,I, secured to said presser-bar and entering an inclosed slot, J, in thesaid lever, said slot, when the liftinglever is in the positionindicated by Fig. l, permitting the presser-bar and its attached pin Ito move vertically to a limited extent without disturbing the lever, thelatter being provided with a eounterbalancing part, K, to

keep it at rest. As is well known, the feed,

working in. opposition tothe presser-foot, causes the latter and thepresser-bar to rise slightly at each stitch as the feed rises, prior tomoving forward to advance the goods, and this upward movement of thepresser-bar causes the litters of -ordinary construction, when pivotedto the presser-bars', to vibrate. This constant vibrating movement ofthe lifters, which is Vdeemed to be objectionable, is obviatedA by theconstruction just above described. away to form a recess, L, throughwhich the handle of the lifting-lever projects, the walls or ends ofsaid recess serving as stops to limitthe movements of the said handle.The faccplate is also provided with a block or fixed portion, M, whichmay be formed integral with said face-plate, as shown, or :may be aseparate piece securedA to said face-plate by screws or otherwise. Thisblock or fixed portion M is preferably Yformed with two inclinedsurfaces, fm. and m', preferably of different dimensions, converging toa point, m2, which mayr The side of the face-.plate A is cut' beslightly rounded. These inclined surfaces Y may be either straight, asshown, or they may be formed convexl or curved. l The lifting-lever isprovided on opposite sides ofV its point of connection with thepresser-bar, and at unequal distances therefron1,'with lugs orprojections h and h, which are adapted to bear against the inclinedsurfaces m and m', respectively. The projections h and h serve as ful-Vcra for the lifting-lever in raising the presserbar, the weight to beraised being sustained by the projection 7L or the projection h',accordingly as the handle of the lifting-lever is elevated or depressed.Thus, if the handle ofthe Vlifting-lever be depressed, the weight ofthepresser-bar will be thrown onthelug 11,', bearing on the inclinedsurface m', and a continued depression of said handle will cause saidlug to travel up said inclined surface until the handle strikes thelower wall of the recess L and the lug h has reached the point m2, whenthe presser-foot will be raised to the position shown by dotted lines inFig. 2. In thus operating, the lifting-leverwill act as a lever of thefirst order, the fulcruni being between the power and the weight. Ii',however, the handle of the lifting-lever be raised, the weight of thepresser-bar will be thrown on the lug 71,

IOC

and said lug will be caused to travel up the inclined surface m to thepoint m2, as indicated in full lines, Fig. 2, raising the presser-footto 'its highest position, the lifting-lever being the presser-bar, andat unequal distancesV therefrom, and by providing suitable fixedbearing-surfaces on which said fulcra can travel when the liftingleveris elevated ordepressed,the presser bar and foot may be raised todifferent heights by moving the handle of ,the lever in one directionor. the other, thus ,obviating the necessity of too great a sweep of thehandle in securing a variabledouble lift of the presser-foot. f

If it is not deemed desirable to use the construction whieh admits ofthe double lift of the presser-bar, a lifting-lever having but one,fnlcrumand a fixed bearing-surface having but a single incline may beemployed.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. rlhe combination, with the presser-bar` of asewing-machine, of a lifting-lever pivot.-

ed to said bar, and provided with a fulcrum on each side of its point ofattachment to said bar, and afixed block having inclinedbearing-surfaces for the fulcra of said lever, substantially as setforth.

2. The combination, with the presser-bar of a sewing-machine, of alifting-lever pivoted to said bar, and provided with two fulcra,

one on each side of its point of attachment to l said bar, and atunequal distances therefrom, and a xed block having/inclined bearing-sunfaces for said fulcra, substantially as set forth.

3. -The combination, with the pressenbar of a sewing-machine, of alifting-lever pivot.- ed to said bar, and provided with two fulcra, oneon each side of the point of attachment to ,said bar, 'and atunequaldistances therefrom, and a fixed block having two inclinedbearingsurfaces of different dimensions, substantially as set forth.

4. The combination, with the presser-bar of a sewing-machine, of alifting-lever pivoted to said bar, and provided with two fulcra, one oneach side of its pivot-al point, a fixed block havinginclinedbearing-'surfaces for the said fulcra, and stops ormeans for limitingthe movement of said lever when the same is turned in either direction,substantially as set forth.

'5. The combination, with a presser-barhav ing a lifting-pin securedthereto, of a liftinglever having a slot in which said pin is arranged,saidlever also having two fulcra, one on each side of said slot, and acounterbalaneed portion to hold it at rest during slight

